Ever wondered how the blind are supposed to make a cup of hot coffee or chocolate? Surely they can’t use their finger to estimate the level of hot water in a cup unless they would want to scald themselves, and this is where the Braun Bell Mug comes in. It comes with a trio of indicative levels on the handle alongside liquid-level sensors inside the mug, allowing those who are visually impaired to select the desired level and keep on pouring until the bell sounds off, indicating your hand to stop.